This is dated July 1994. It's a simple castle-style level, and surprisingly for its time and genre it's not bad; you fight 200 monsters that mostly assail you in large groups, so the level of carnage is decent. Against it you get loads of weapons and ammo (don't bother conserving the plasma or rockets, you have plenty), it ends in a teleport maze, and it's easy. But I enjoyed it, and that's what counts.